63e88f80
 Hu Chunming
提交三方库
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
// Copyright (C) 2005-2006 Alain Miniussi <alain.miniussi -at- oca.eu>.
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// Message Passing Interface 1.1 -- Section 4. MPI Collectives
/** @file inplace.hpp
*
* This header provides helpers to indicate to MPI collective operation
* that a buffer can be use both as an input and output.
*/
#ifndef BOOST_MPI_INPLACE_HPP
#define BOOST_MPI_INPLACE_HPP
#include <boost/mpi/communicator.hpp>
#include <vector>
namespace boost { namespace mpi {
/**
* @brief Wrapper type to explicitly indicate that a input data
* can be overriden with an output value.
*/
template <typename T>
struct inplace_t {
inplace_t(T& inout) : buffer(inout) {}
T& buffer;
};
template <typename T>
struct inplace_t<T*> {
inplace_t(T* inout) : buffer(inout) {}
T* buffer;
};
/**
* @brief Wrapp a input data to indicate that it can be overriden
* with an ouput value.
* @param inout the contributing input value, it will be overriden
* with the output value where one is expected. If it is a pointer,
* the number of elements will be provided separatly.
* @returns The wrapped value or pointer.
*/
template<typename T>
inplace_t<T>
inplace(T& inout) {
return inplace_t<T>(inout);
}
/**
* \overload
*/
template<typename T>
inplace_t<T*>
inplace(T* inout) {
return inplace_t<T*>(inout);
}
} } // end namespace boost::mpi
#endif // BOOST_MPI_INPLACE_HPP
|
